CN114835294A

CN114835294A - Medium-high temperature solar brackish water desalination treatment device

Info

Publication number: CN114835294A
Application number: CN202210490369.XA
Authority: CN
Inventors: 刘春成; 李中阳; 黄鹏飞; 崔丙健; 胡超; 刘源
Original assignee: Farmland Irrigation Research Institute of CAAS
Current assignee: Farmland Irrigation Research Institute of CAAS
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-08-02

Abstract

The invention relates to the field of water purification treatment, in particular to a medium-high temperature solar brackish water desalination treatment device, which comprises a treatment room, a solar energy supply assembly, a bin gate and a treatment system, wherein the treatment room is provided with a solar energy supply assembly; the solar energy supply assembly is electrically connected with the processing system. The treatment system comprises a raw water tank, a raw water booster pump assembly, a pH value adjusting assembly, a high-pressure pump, a reverse osmosis assembly, a sedimentation tank assembly, a sand filtering assembly, a carbon filtering assembly, a softener assembly, a pure water tank and a water outlet pump. The invention relates to a reverse osmosis water treatment process mainly applied to brackish water treatment, which belongs to a physical desalting method and has the excellent characteristics that the traditional water treatment method does not have: normal temperature operation, simple equipment, high benefit, small occupied area, convenient operation, low energy consumption, wide application range, high automation degree, good water outlet quality and the like. The reverse osmosis brackish water device using wind energy and solar energy as power is an economic and reliable way to solve the problem of domestic water of people in areas without electricity and conventional energy shortage.

Description

Medium-high temperature solar brackish water desalination treatment device

Technical Field

The invention relates to the field of water purification treatment, in particular to a medium-high temperature solar brackish water desalination treatment device.

Background

The invention with the publication number of CN204848548U discloses a medium-high temperature solar brackish water desalination treatment device, which comprises a brackish water desalination treatment device body, wherein a solar device is arranged at the top of the brackish water desalination treatment device body, the solar device comprises a solar panel, a support frame and a lifting device, the solar panel is arranged on the support frame, the support frame is arranged on the lifting device, a high-temperature heat collection device is arranged in the brackish water desalination treatment device body, the brackish water desalination treatment device body is connected with a filter through a connecting pipeline I, and the brackish water desalination treatment device body is connected with a sterilization sterilizer through a connecting pipeline II and a connecting pipeline III.

However, the above prior art has the following drawbacks: the sterilization disinfector adopted by the device has high working energy consumption and large workload of operation maintenance and equipment maintenance; and the whole equipment occupies a large area and needs a large space. The method can only be applied to the treatment of brackish water and seawater with higher concentration, and is weaker to the treatment of fresh water with low salt content.

Disclosure of Invention

The invention provides a medium-high temperature solar brackish water desalination treatment device aiming at the technical problems in the background technology.

The technical scheme of the invention is as follows: a medium-high temperature solar brackish water desalination treatment device comprises a treatment room, a solar energy supply assembly, a bin gate and a treatment system; the solar energy supply assembly is electrically connected with the processing system.

The treatment system comprises a raw water tank, a raw water booster pump assembly, a pH value adjusting assembly, a high-pressure pump, a reverse osmosis assembly, a sedimentation tank assembly, a sand filtering assembly, a carbon filtering assembly, a softener assembly, a pure water tank and a water outlet pump.

The water outlet end of the raw water tank is connected with the water inlet end of the raw water booster pump assembly. The water outlet end of the raw water booster pump assembly is connected with the water inlet end of the pH value adjusting assembly. The water outlet end of the pH value adjusting component is connected with the water inlet end of the high-pressure pump. The water outlet end of the high-pressure pump is connected with the water inlet end of the reverse osmosis component. The water outlet end of the sedimentation tank component is connected with the water inlet end of the sand filtering component. The water outlet end of the sand filtering component is connected with the water inlet end of the carbon filtering component. The water outlet end of the carbon filtering component is connected with the water inlet end of the softener component. The water outlet end of the softener component is connected with the water inlet end of the water outlet pump. The water outlet end of the water outlet pump is provided with a desalination water outlet pipe.

Preferably, the raw water booster pump component comprises a water inlet pipe, a booster pump, a first flowmeter and a water outlet pipe; the water inlet end of the water inlet pipe is arranged at the water outlet end of the original water tank; the booster pump is communicated with the water inlet pipe; the first flowmeter is arranged at the water outlet end of the booster pump; the water inlet end of the water outlet pipe is arranged at the water outlet end of the first flowmeter, and the water outlet end of the water outlet pipe is arranged at the water inlet end of the pH value adjusting assembly.

Preferably, the pH value adjusting component comprises a pH value detecting box, a pH value adjusting part, an alkaline adjusting part, a detecting pipe, a processing bin and a liquid conveying pipe; the water inlet end of the detection pipe is arranged at the water outlet end of the raw water booster pump component; the pH value detection box is communicated with the detection tube; the water inlet end of the treatment bin is arranged at the water outlet end of the detection pipe, and the water outlet end of the treatment bin is communicated with the water inlet end of the high-pressure pump; the acid regulating part and the alkaline regulating part are communicated with the treatment bin through a liquid conveying pipe.

Preferably, the acidic adjusting piece comprises an acidic solution bin and an acidic solution pump; the acidic solution pump is arranged at the water outlet end of the acidic solution bin and communicated with the infusion tube.

Preferably, the alkaline adjusting part comprises an alkaline solution bin and an alkaline solution pump; the alkaline solution pump is arranged at the water outlet end of the alkaline solution bin and communicated with the infusion tube.

Preferably, the reverse osmosis component comprises a second flow meter and an RO reverse osmosis membrane treatment bin; and the second flowmeter is arranged at the water inlet end of the RO reverse osmosis membrane treatment bin.

Preferably, the sedimentation tank assembly comprises a sedimentation tank, a sedimentation tank water outlet pipe and a sedimentation tank water inlet pipe; the water inlet pipe of the sedimentation tank is positioned at a high water pressure position, and the water outlet end of the water inlet pipe of the sedimentation tank is arranged at the water inlet end of the sedimentation tank; the water outlet pipe of the sedimentation tank is positioned at the low water pressure position, and the water inlet end of the water outlet pipe of the sedimentation tank is arranged at the water outlet end of the sedimentation tank.

Preferably, a physical filter screen is arranged in the sand filter component; an active carbon filtering piece is arranged in the carbon filtering component; a water softening device is arranged in the softener assembly.

A water treatment method of a medium-high temperature solar brackish water desalination treatment device comprises the following steps:

s1, storing the raw water in a raw water tank, pumping the raw water into a pH value detection tank through a raw water booster pump assembly, and finally reaching a treatment bin;

s2, adjusting the pH value of the raw water in the treatment bin according to the real-time detection data of the pH value detection box; when the pH value of the raw water is different from that required by the RO membrane treatment bin, the pH value balance adjustment is carried out on the raw water through the acidic adjustment piece and the alkaline adjustment piece respectively;

s3, pressurizing the adjusted raw water by a high-pressure pump, and pumping the raw water into an RO reverse osmosis membrane treatment bin; raw water is treated by the RO reverse osmosis membrane treatment bin, solute in the raw water passes through the RO reverse osmosis membrane and remains in the RO reverse osmosis membrane treatment bin, and treated pure water flows out of the RO reverse osmosis membrane treatment bin and enters the sedimentation basin assembly;

s4, after the pure water is settled in the settling basin, the pure water passes through a sand filtering component, a carbon filtering component and a softener component in sequence through a water outlet pipe of the settling basin, and the later-stage precise filtering is realized;

s5, storing the filtered pure water into a pure water tank under the action of a water outlet pump, and completing the brackish water desalination treatment.

Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects: the invention relates to a reverse osmosis water treatment process mainly applied to brackish water treatment, which belongs to a physical desalting method and has excellent characteristics that the traditional water treatment method does not have in many aspects: reverse osmosis is the desalination and purification of salt-containing water at room temperature by a physical method without phase change. The desalination rate of the ultrathin composite membrane element can reach more than 99.5 percent, and colloid, organic matters, bacteria, viruses and the like in water can be removed simultaneously. The treatment of water relies solely on the pressure of the water as a driving force, with the energy consumption being the lowest among many water treatment processes. Reverse osmosis can run water continuously, the system is simple, the operation is convenient, and the product water quality is stable. The reverse osmosis device has high automation degree and little workload of operation maintenance and equipment maintenance. The equipment occupies a small area and needs a small space. Is suitable for the treatment of brackish water and seawater and is also suitable for the treatment of fresh water with low salt content. The invention integrates the experience of process design, equipment manufacture, system set and membrane application technology of the industrial water treatment system for many years, selects reasonable process setting and design parameters and ensures the long-term stable operation of the equipment.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic diagram of a processing system according to an embodiment of the invention.

FIG. 3 is a schematic diagram of a processing system according to an embodiment of the invention.

Fig. 4 is a partially enlarged structural diagram of a portion a in fig. 2.

Fig. 5 is a partially enlarged structural view at B in fig. 3.

Reference numerals: 1. a treatment room; 2. a solar energy supply assembly; 3. a bin gate; 4. a raw water tank; 5. a raw water booster pump assembly; 6. a pH value detection box; 7. a pH value adjusting component; 8. an acidity regulating member; 9. an alkaline conditioner; 10. a high pressure pump; 11. a reverse osmosis module; 12. a settling tank assembly; 13. a sand filter assembly; 14. a carbon filter assembly; 15. a softener assembly; 16. a pure water tank; 17. discharging the water pump; 18. a booster pump; 19. a first flowmeter; 20. a water outlet pipe; 21. a detection tube; 22. a processing bin; 23. a transfusion tube; 24. an acidic solution bin; 25. an acidic solution pump; 26. an alkaline solution pump; 27. an alkaline solution bin; 28. a second flowmeter; 29. an RO reverse osmosis membrane treatment bin; 30. a sedimentation tank; 31. a water outlet pipe of the sedimentation tank; 32. a sedimentation tank water inlet pipe; 33. and (4) a water inlet pipe.

Detailed Description

Example one

The invention provides a medium-high temperature solar brackish water desalination treatment device, which comprises a treatment room 1, a solar energy supply assembly 2, a bin gate 3 and a treatment system, wherein the treatment room is provided with a solar energy supply assembly; the solar energy supply assembly 2 is electrically connected with the processing system.

As shown in fig. 1 to 5, the treatment system comprises a raw water tank 4, a raw water booster pump assembly 5, a ph value adjusting assembly, a high pressure pump 10, a reverse osmosis assembly 11, a sedimentation tank assembly 12, a sand filter assembly 13, a carbon filter assembly 14, a softener assembly 15, a pure water tank 16 and an effluent pump 17.

The water outlet end of the raw water tank 4 is connected with the water inlet end of the raw water booster pump component 5. The water outlet end of the raw water booster pump component 5 is connected with the water inlet end of the pH value adjusting component 7. The water outlet end of the pH value adjusting component 7 is connected with the water inlet end of the high-pressure pump 10. The water outlet end of the high-pressure pump 10 is connected with the water inlet end of the reverse osmosis component 11. The water outlet end of the sedimentation tank component 12 is connected with the water inlet end of the sand filtering component 13. The water outlet end of the sand filter assembly 13 is connected with the water inlet end of the carbon filter assembly 14. The water outlet end of the carbon filter assembly 14 is connected to the water inlet end of the softener assembly 15. The water outlet end of the softener assembly 15 is connected with the water inlet end of the water outlet pump 17. The water outlet end of the water outlet pump 17 is provided with a desalination water outlet pipe.

In this embodiment, a water treatment method of a medium-high temperature solar brackish water desalination treatment device is as follows: raw water is stored in a raw water tank 4, pumped into a pH value detection tank 6 through a raw water booster pump assembly 5 and finally reaches a treatment bin 22. Adjusting the pH value of the raw water in the treatment bin 22 according to the real-time detection data of the pH value detection box 6; when the pH value of the raw water is different from that of the RO reverse osmosis membrane treatment bin 29, the pH value of the raw water is balanced and adjusted by the acid adjusting piece 8 and the alkaline adjusting piece 9 respectively. The adjusted raw water is pressurized by a high-pressure pump 10 and pumped into an RO reverse osmosis membrane treatment bin 29; the raw water is treated in the RO reverse osmosis membrane treatment tank 29, and the solute therein passes through the reverse osmosis membrane and remains in the RO reverse osmosis membrane treatment tank 29.

In the RO reverse osmosis membrane treatment bin 29, under the action of the high-pressure pump 10, the solute in the raw water is forced to be separated from the solvent by the interception effect of the semipermeable membrane, so that the purposes of concentration, purification or separation are achieved. The 'broad spectrum' separation of the semipermeable membrane can not only remove various ions in water, but also remove particles larger than the ions, such as most of organic matters, colloids, viruses, bacteria, suspended matters and the like, so the reverse osmosis separation method is also called as a broad spectrum separation method. The reverse osmosis desalination method can remove more than 90% of soluble salts, more than 99% of colloidal microorganisms, organic matters and the like from water.

The treated pure water flows out of the RO reverse osmosis membrane treatment bin 29 and enters the sedimentation basin module 12. After the pure water is settled in the settling basin 30, the pure water passes through the sand filtering component 13, the carbon filtering component 14 and the softener component 15 in sequence through the water outlet pipe 31 of the settling basin, so that the later-stage precise filtering is realized. The filtered pure water is stored in the pure water tank 16 under the action of the water outlet pump 17, and the brackish water desalination treatment is completed.

Example two

Further, the raw water booster pump assembly 5 comprises a water inlet pipe 33, a booster pump 18, a first flowmeter 19 and a water outlet pipe 20; the water inlet end of the water inlet pipe 33 is arranged at the water outlet end of the original water tank 4; the booster pump 18 is communicated with the water inlet pipe 33; the first flowmeter 19 is arranged at the water outlet end of the booster pump 18; the water inlet end of the water outlet pipe 20 is arranged at the water outlet end of the first flowmeter 19, and the water outlet end of the water outlet pipe 20 is arranged at the water inlet end of the pH value adjusting assembly 7.

In this embodiment, a water treatment method of a medium-high temperature solar brackish water desalination treatment device is as follows: raw water is stored in a raw water tank 4, pumped into a pH value detection tank 6 through a raw water booster pump assembly 5 and finally reaches a treatment bin 22. Adjusting the pH value of the raw water in the treatment bin 22 according to the real-time detection data of the pH value detection box 6; when the pH value of the raw water is different from that required by the RO reverse osmosis membrane treatment bin 29, the pH value balance adjustment is performed on the raw water through the acidic adjustment member 8 and the alkaline adjustment member 9 respectively. The adjusted raw water is pressurized by a high-pressure pump 10 and pumped into an RO reverse osmosis membrane treatment bin 29; the raw water is treated by the RO reverse osmosis membrane treatment chamber 29, the solute therein passes through the RO reverse osmosis membrane and remains in the RO reverse osmosis membrane treatment chamber 29, and the treated pure water flows out of the RO reverse osmosis membrane treatment chamber 29 and enters the sedimentation tank module 12. After the pure water is settled in the settling basin 30, the pure water sequentially passes through the sand filtering component 13, the carbon filtering component 14 and the softener component 15 through the water outlet pipe 31 of the settling basin, so that the precise filtering in the later stage is realized. The filtered pure water is stored in the pure water tank 16 under the action of the water outlet pump 17, and the brackish water desalination treatment is completed.

EXAMPLE III

Further, the pH value adjusting component 7 comprises a pH value detecting box 6, a pH value adjusting part 8, an alkaline adjusting part 9, a detecting tube 21, a processing bin 22 and a transfusion tube 23; the water inlet end of the detection pipe 21 is arranged at the water outlet end of the raw water booster pump component 5; the pH value detection box 6 is communicated with the detection tube 21; the water inlet end of the treatment bin 22 is arranged at the water outlet end of the detection pipe 21, and the water outlet end of the treatment bin 22 is communicated with the water inlet end of the high-pressure pump 10; the acidic regulator 8 and the alkaline regulator 9 are communicated with the processing bin 22 through a liquid conveying pipe 23.

In this embodiment, a water treatment method of a medium-high temperature solar brackish water desalination treatment device is as follows: raw water is stored in a raw water tank 4, pumped into a pH value detection tank 6 through a raw water booster pump assembly 5 and finally reaches a treatment bin 22.

The adjusted raw water is pressurized by a high-pressure pump 10 and pumped into an RO reverse osmosis membrane treatment bin 29; the raw water is treated by the RO reverse osmosis membrane treatment chamber 29, the solute therein passes through the RO reverse osmosis membrane and remains in the RO reverse osmosis membrane treatment chamber 29, and the treated pure water flows out of the RO reverse osmosis membrane treatment chamber 29 and enters the sedimentation tank module 12. After the pure water is settled in the settling basin 30, the pure water passes through the sand filtering component 13, the carbon filtering component 14 and the softener component 15 in sequence through the water outlet pipe 31 of the settling basin, so that the later-stage precise filtering is realized. The filtered pure water is stored in the pure water tank 16 under the action of the water outlet pump 17, and the brackish water desalination treatment is completed.

Example four

Further, the acidic adjusting member 8 includes an acidic solution chamber 24 and an acidic solution pump 25; the acidic solution pump 25 is arranged at the water outlet end of the acidic solution bin 24, and the acidic solution pump 25 is communicated with the infusion tube 23.

Further, the alkaline adjusting member 9 includes an alkaline solution chamber 27 and an alkaline solution pump 26; the alkaline solution pump 26 is disposed at the water outlet end of the alkaline solution chamber 27, and the alkaline solution pump 26 is disposed in communication with the infusion tube 23.

Adjusting the pH value of the raw water in the treatment bin 22 according to the real-time detection data of the pH value detection box 6; when the pH value of the raw water is different from that required by the RO reverse osmosis membrane treatment bin 29, the pH value balance adjustment is performed on the raw water through the acidic adjustment member 8 and the alkaline adjustment member 9 respectively.

EXAMPLE five

In this embodiment, a water treatment method of a medium-high temperature solar brackish water desalination treatment device is as follows: raw water is stored in a raw water tank 4, pumped into a pH value detection tank 6 through a raw water booster pump assembly 5 and finally reaches a treatment bin 22. Adjusting the pH value of the raw water in the treatment bin 22 according to the real-time detection data of the pH value detection box 6; when the pH value of the raw water is different from that of the RO reverse osmosis membrane treatment bin 29, the pH value of the raw water is balanced and adjusted by the acid adjusting piece 8 and the alkaline adjusting piece 9 respectively. The adjusted raw water is pressurized by a high-pressure pump 10 and pumped into an RO reverse osmosis membrane treatment bin 29; the raw water is treated by the RO reverse osmosis membrane treatment chamber 29, the solute therein passes through the RO reverse osmosis membrane and remains in the RO reverse osmosis membrane treatment chamber 29, and the treated pure water flows out of the RO reverse osmosis membrane treatment chamber 29 and enters the sedimentation tank module 12. After the pure water is settled in the settling basin 30, the pure water sequentially passes through the sand filtering component 13, the carbon filtering component 14 and the softener component 15 through the water outlet pipe 31 of the settling basin, so that the precise filtering in the later stage is realized. The filtered pure water is stored in the pure water tank 16 under the action of the water outlet pump 17, and the brackish water desalination treatment is completed.

Further, the reverse osmosis component 11 comprises a second flow meter 28 and an RO reverse osmosis membrane treatment bin 29; and the second flow meter 28 is arranged at the water inlet end of the RO reverse osmosis membrane treatment bin 29.

The salt rejection of the RO membrane element is determined when the RO membrane element is manufactured and formed, the salt rejection depends on the compactness of an ultrathin desalting layer on the surface of the RO membrane element, the denser the desalting layer is, the higher the salt rejection is, and the water yield is lower. The desalination rate of the reverse osmosis membrane to different substances is mainly determined by the structure and molecular weight of the substances, the desalination rate to high-valence ions and complex monovalent ions can exceed 99%, and the desalination rate to monovalent ions such as: the salt rejection rate of sodium ions, potassium ions and chloride ions is slightly lower, but can exceed 98 percent (the longer the service time of the reverse osmosis membrane is, the more the chemical cleaning times are, the lower the salt rejection rate of the reverse osmosis membrane is), but the rejection rate of organic matters with molecular weight more than 100 can also exceed 98 percent, but the rejection rate of organic matters with molecular weight less than 100 is lower.

The salt rejection and salt permeability calculation method of the reverse osmosis membrane comprises the following steps: the salt permeability of the RO membrane is equal to the water yield concentration/water inlet concentration multiplied by 100 percent of the RO membrane; the salt rejection of the RO membrane (1-produced water salt content/feed water salt content of the RO membrane) × 100%; the salt permeability of the RO membrane is 100% -salt rejection.

Water yield of RO membrane: refers to the water production capacity of a reverse osmosis system, i.e., the amount of water that permeates an RO membrane per unit time, typically expressed in tons/hour or gallons/day.

Permeate flow rate of RO membrane: and is also an important index for representing the water yield of the reverse osmosis membrane element. Refers to the flow rate of permeate per unit membrane area, typically expressed in gallons per square foot per day (GFD). Too high a permeate flow rate will result in faster water flow rates perpendicular to the RO membrane surface, exacerbating membrane fouling.

Recovery rate of RO membrane: refers to the percentage of feed water converted to product water or permeate in a reverse osmosis membrane system. According to the water quality and water requirement of the inlet water pretreated in the reverse osmosis system. The recovery rate of the RO membrane system is determined at design time. The recovery rate of the RO membrane (flow rate of produced water/flow rate of feed water of the RO membrane) × 100%. The calculation formulas of the recovery rate, the salt permeability and the salt rejection rate of the reverse osmosis (nanofiltration) membrane component are as follows: the recovery rate of the reverse osmosis membrane module is equal to the water yield/water inflow of the RO membrane module multiplied by 100 percent; the salt permeability of the reverse osmosis membrane module is equal to the water production concentration/water inlet concentration multiplied by 100 percent of the RO membrane module.

EXAMPLE six

Further, the sedimentation tank assembly 12 comprises a sedimentation tank 30, a sedimentation tank water outlet pipe 31 and a sedimentation tank water inlet pipe 32; the sedimentation tank water inlet pipe 32 is positioned at a high water pressure, and the water outlet end of the sedimentation tank water inlet pipe 32 is arranged at the water inlet end of the sedimentation tank 30; the water outlet pipe 31 of the sedimentation tank is positioned at a low water pressure position, and the water inlet end of the water outlet pipe 31 of the sedimentation tank is arranged at the water outlet end of the sedimentation tank 30.

In this embodiment, a water treatment method of a medium-high temperature solar brackish water desalination treatment device is as follows: raw water is stored in a raw water tank 4, pumped into a pH value detection tank 6 through a raw water booster pump assembly 5 and finally reaches a treatment bin 22. Adjusting the pH value of the raw water in the treatment bin 22 according to the real-time detection data of the pH value detection box 6; when the pH value of the raw water is different from that of the RO reverse osmosis membrane treatment bin 29, the pH value of the raw water is balanced and adjusted by the acid adjusting piece 8 and the alkaline adjusting piece 9 respectively. The adjusted raw water is pressurized by a high-pressure pump 10 and pumped into an RO reverse osmosis membrane treatment bin 29; the raw water is treated by the RO reverse osmosis membrane treatment chamber 29, the solute therein passes through the RO reverse osmosis membrane and remains in the RO reverse osmosis membrane treatment chamber 29, and the treated pure water flows out of the RO reverse osmosis membrane treatment chamber 29 and enters the sedimentation tank module 12. After the pure water is settled in the settling basin 30, the pure water passes through the sand filtering component 13, the carbon filtering component 14 and the softener component 15 in sequence through the water outlet pipe 31 of the settling basin, so that the later-stage precise filtering is realized. The filtered pure water is stored in the pure water tank 16 under the action of the water outlet pump 17, and the brackish water desalination treatment is completed.

EXAMPLE seven

Further, a physical filter screen is arranged in the sand filter assembly 13; an activated carbon filter element is arranged in the carbon filter component 14; a water softening device is provided within the softener assembly 15.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A medium-high temperature solar brackish water desalination treatment device is characterized by comprising a treatment room (1), a solar energy supply assembly (2), a bin gate (3) and a treatment system; the solar energy supply assembly (2) is electrically connected with the processing system;

the treatment system comprises a raw water tank (4), a raw water booster pump assembly (5), a pH value adjusting assembly, a high-pressure pump (10), a reverse osmosis assembly (11), a sedimentation tank assembly (12), a sand filtering assembly (13), a carbon filtering assembly (14), a softener assembly (15), a pure water tank (16) and a water outlet pump (17);

the water outlet end of the raw water tank (4) is connected with the water inlet end of the raw water booster pump assembly (5);

the water outlet end of the raw water booster pump component (5) is connected with the water inlet end of the pH value adjusting component (7);

the water outlet end of the pH value adjusting component (7) is connected with the water inlet end of the high-pressure pump (10);

the water outlet end of the high-pressure pump (10) is connected with the water inlet end of the reverse osmosis component (11);

the water outlet end of the sedimentation tank component (12) is connected with the water inlet end of the sand filtering component (13);

the water outlet end of the sand filtering component (13) is connected with the water inlet end of the carbon filtering component (14);

the water outlet end of the carbon filtering component (14) is connected with the water inlet end of the softener component (15);

the water outlet end of the softener component (15) is connected with the water inlet end of the water outlet pump (17);

the water outlet end of the water outlet pump (17) is provided with a desalination water outlet pipe.

2. The medium-high temperature solar brackish water desalination treatment plant according to claim 1, characterized in that the raw water booster pump assembly (5) comprises a water inlet pipe (33), a booster pump (18), a first flow meter (19) and a water outlet pipe (20); the water inlet end of the water inlet pipe (33) is arranged at the water outlet end of the original water tank (4); the booster pump (18) is communicated with the water inlet pipe (33); the first flowmeter (19) is arranged at the water outlet end of the booster pump (18); the water inlet end of the water outlet pipe (20) is arranged at the water outlet end of the first flowmeter (19), and the water outlet end of the water outlet pipe (20) is arranged at the water inlet end of the pH value adjusting component (7).

3. The medium-high temperature solar brackish water desalination treatment device according to claim 1, wherein the pH value adjusting assembly (7) comprises a pH value detecting box (6), a pH value adjusting piece (8), an alkaline adjusting piece (9), a detecting pipe (21), a treatment bin (22) and a transfusion pipe (23); the water inlet end of the detection pipe (21) is arranged at the water outlet end of the raw water booster pump assembly (5); the pH value detection box (6) is communicated with the detection tube (21); the water inlet end of the treatment bin (22) is arranged at the water outlet end of the detection pipe (21), and the water outlet end of the treatment bin (22) is communicated with the water inlet end of the high-pressure pump (10); the acidic regulator (8) and the alkaline regulator (9) are communicated with the treatment bin (22) through a transfusion tube (23).

4. The medium-high temperature solar brackish water desalination treatment plant according to claim 3, characterized in that the acidic conditioning piece (8) comprises an acidic solution tank (24) and an acidic solution pump (25); the acidic solution pump (25) is arranged at the water outlet end of the acidic solution bin (24), and the acidic solution pump (25) is communicated with the infusion tube (23).

5. The medium-high temperature solar brackish water desalination treatment plant according to claim 3, characterized in that the alkaline adjusting means (9) comprises an alkaline solution tank (27) and an alkaline solution pump (26); the alkaline solution pump (26) is arranged at the water outlet end of the alkaline solution bin (27), and the alkaline solution pump (26) is communicated with the infusion tube (23).

6. The medium and high temperature solar energy brackish water desalination treatment plant according to claim 1, characterized in that the reverse osmosis module (11) comprises a second flow meter (28) and an RO reverse osmosis membrane treatment bin (29); and the second flowmeter (28) is arranged at the water inlet end of the RO reverse osmosis membrane treatment bin (29).

7. The medium and high temperature solar brackish water desalination treatment plant according to claim 1, characterized in that the sedimentation tank assembly (12) comprises a sedimentation tank (30), a sedimentation tank outlet pipe (31) and a sedimentation tank inlet pipe (32); the sedimentation tank water inlet pipe (32) is positioned at a high water pressure position, and the water outlet end of the sedimentation tank water inlet pipe (32) is arranged at the water inlet end of the sedimentation tank (30); the water outlet pipe (31) of the sedimentation tank is positioned at a low water pressure position, and the water inlet end of the water outlet pipe (31) of the sedimentation tank is arranged at the water outlet end of the sedimentation tank (30).

8. The medium-high temperature solar energy brackish water desalination treatment plant according to claim 1, characterized in that a physical filter screen is arranged in the sand filter assembly (13); an active carbon filtering piece is arranged in the carbon filtering component (14); a water softening device is arranged in the softener component (15).

9. The water treatment method of the medium-high temperature solar energy brackish water desalination treatment plant according to any one of claims 1 to 8, characterized by the following steps:

s1, storing raw water in a raw water tank (4), pumping the raw water into a pH value detection tank (6) through a raw water booster pump assembly (5), and finally reaching a treatment bin (22);

s2, adjusting the pH value of the raw water in the treatment bin (22) according to the real-time detection data of the pH value detection box (6); when the pH value of the raw water is different from that required by the RO membrane treatment bin (29), the pH value of the raw water is balanced and adjusted by an acid adjusting piece (8) and an alkaline adjusting piece (9) respectively;

s3, pumping the adjusted raw water into an RO reverse osmosis membrane treatment bin (29) through the pressurization of a high-pressure pump (10); raw water is treated by an RO reverse osmosis membrane treatment bin (29), solute in the raw water passes through the RO reverse osmosis membrane and remains in the RO reverse osmosis membrane treatment bin (29), and treated pure water flows out of the RO reverse osmosis membrane treatment bin (29) and enters a sedimentation basin assembly (12);

s4, after settling in the settling basin (30), pure water passes through a sand filtering component (13), a carbon filtering component (14) and a softener component (15) in sequence through a settling basin water outlet pipe (31), and then later-stage precise filtering is realized;

s5, storing the filtered pure water into a pure water tank (16) under the action of a water outlet pump (17) to finish the desalination treatment of the brackish water.